artif: collect SSH public keys, test secret keys for null passphrases #424
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Adding two new SSH artifacts to help track attacker lateral movement.
uac-cra/artifacts/files/ssh/public_keys.yaml collects public keys from user .ssh directories so that they can be correlated against authorized_keys entries.
.../check_passphrase.yaml checks secret keys to see which ones have null passphrases, making them more useful to attackers.